I bit the bullet, since Kahr's new pricing is super cheap and I was told here and a few other places that 1911 mags would work, I went ahead and bought the CW45 and started playing with it. We had one at the shop that I was able to play around with and I confirmed which mags work in it and which don't, so I thought I would give you guys a quick review of the pistol.
I found that ACT/Novak mags work spectacular and CDNN has them for $17.99 each. I bought one 7rnd officers mag and 4 8 round government mags. They all fit perfectly. I have read that Promags work, but I have really good experiences with ACT as they are the factory Rock Island/High Standard/ATI magazines and have a great record with my use. Sig factory 1911 mags worked by hand as well. Wilson Combat, Springfield Armory, Chip McCormick, and Colt mags do NOT work in the pistol.
The 7 round mag fits almost identically to the stock 6 round mag, but gives one more 230gr slug and it's easier to close the slide on.
The 8 rounders hang out like they would in an officers model
The CW45 weighs 19.7oz vs 26oz as the lightest officer I've ever seen and my Kimber is 31oz. At 1/3 lighter, it really is nice to pack it all day. I carry open with the 8 rnd mag just like my Pro Carry. The pistol also fits my Glock 19 Serpa, my Tagua Glock 19 holster, and my Uncle Mikes duty paddle holster perfectly. Oddly enough it also fits my DeSantis Intruder IWB holster perfectly and eliminates the hammer jab I was getting with my 1911's
The only real complaints I have are at the back of the pistol the corners are rather sharp on the plastic frame and they wore blisters on the web of my hand during the 250rnd break in. Also bruised the flesh a bit, but my hands are a little meaty so someone with slimmer hands may not have an issue. There was one Failure to Feed with a Champion brass FMJ that had been chambered by hand over 100x while testing the 1911 mags for function before the range trip. The case rim was chewed up pretty good and the casing wall was scratched from being stripped from the mags so much so I don't think it was the gun's fault. One bump to the rear of the slide chambered it instantly. I noticed I was shooting about 4" left the whole time at 30 ft, but grouping was consistent and I didn't bring another pistol to make sure it wasn't me so on a deserted range there is no way to tell if it's an issue or not but it was still Bad Guy accurate so it isn't pressing for the moment. Also the 7rnd mag and one of the 8 round new mags would not lock the slide but fed their entire payload. That doesn't bother me, but it is worth noting.
I loaded all 7 mags and ran them each time back to back so my hands were tired quickly and the gun took about an hour to reach room temperature and there were no additional issues to report except be careful not to touch the metal at first unless you want to match the funny shaped burn that I have.
Felt recoil was lighter than my Pro Carry and with a Limbsaver grip sleeve the factory, razor-edged checkering couldn't do any damage.
Overall I was impressed for a pistol that cost me $365 delivered to my dealer and transferred as well as uses some of the same mags as my 1911s. Also night sights are available for the CW series so there isn't much of a difference between the P and CW anymore unless you have to have the polygonal rifling and milled slide stop (CWs have an MIM one)